Nitrile as Activating Group in the Asymmetric Bioreduction of β-Cyanoacrylic Acids Catalyzed by Ene-Reductases
作者:Christoph K. Winkler、Dorina Clay、Nikolaus G. Turrini、Horst Lechner、Wolfgang Kroutil、Simon Davies、Sebastien Debarge、Pat O'Neill、Jeremy Steflik、Mike Karmilowicz、John W. Wong、Kurt Faber
DOI:10.1002/adsc.201301055
日期:2014.5.26
Asymmetric bioreduction of an (E)‐β‐cyano‐2,4‐dienoic acid derivative by ene‐reductases allowed a shortened access to a precursor of pregabalin [(S)‐3‐(aminomethyl)‐5‐methylhexanoic acid] possessing the desired configuration in up to 94% conversion and >99% ee. Deuterium labelling studies showed that the nitrile moiety was the preferred activating/anchor group in the active site of the enzyme over
的(非对称的生物还原Ë由烯还原酶)-β氰基-2,4-二烯酸衍生物允许缩短访问普瑞巴林的前体[(小号)-3-(氨基甲基)-5-甲基己酸]拥有该所需配置高达94%的转化率和> 99%的ee。氘标记研究表明,相对于羧酸或相应的甲酯,腈部分是酶活性位点中的首选活化/锚定基团。